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https://issues.apache.org/jira/browse/HBASE-27068?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tao Li updated HBASE-27068:
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Attachment: (was: image-2022-05-29-09-17-59-970.png)
> NPE occurs on Web when the active master has not yet been elected
> -----------------------------------------------------------------
>
> Key: HBASE-27068
> URL: https://issues.apache.org/jira/browse/HBASE-27068
> Project: HBase
> Issue Type: Bug
> Reporter: Tao Li
> Assignee: Tao Li
> Priority: Major
> Attachments: image-2022-05-29-10-08-21-637.png,
> image-2022-05-29-10-08-49-672.png
>
>
> When the active master has not yet been elected. We access the master web UI,
> a NPE will be thrown out. Assertion is now added, but assertion in production
> is disabled by default. We can use `Preconditions` instead.
>
> Before the change:
> !image-2022-05-29-10-08-21-637.png|width=268,height=256!
>
> After the change:
> !image-2022-05-29-10-08-49-672.png|width=263,height=255!
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